"the lorry reversed into the back of a bus"

• cause (a vehicle) to move backwards

  "she reversed the car into a side turn"

• (of an engine) work in a contrary direction

  "the ship's engines reversed and cut out altogether"

"the damage done to the ozone layer may be reversed"

• exchange (the position or function) of two people or things

  "the experimenter and the subject reversed roles and the experiment was repeated"

• revoke or annul (a judgement, sentence, or decree made by a lower court or authority)

  "the court reversed his conviction"

"after completing a row of leaves or flowers I have reversed the pattern"

"their press ads had a headline reversed out of the illustration"

"the trend appears to be going in the reverse direction"

• operating, behaving, or ordered in a way contrary or opposite to that which is usual or expected

  "indiscriminate bombing had a reverse effect on popular morale"

• (of a voltage applied to a semiconductor junction) in the direction which does not allow significant current to flow
• denoting a fault in which a relative downward movement occurred in the strata on the underside of the fault plane

"the gall actuates a reverse of photosynthesis"

• reverse gear on a motor vehicle; the position of a gear lever or selector corresponding to this

  "a knob to lock the box in four-wheel drive for reverse"

• a play in which a player reverses the direction of attack by passing the ball to a teammate moving in the opposite direction

  "his touchdown came after he had scampered 58 yards on a reverse with McMahon"

"he didn't feel homesick—quite the reverse"

"United suffered their heaviest reverse of the season"

"the address is given on the reverse of this leaflet"

• a left-hand page of an open book, or the back of a loose document
• the side of a coin or medal bearing the value or secondary design
• the design or inscription on the reverse of a coin or medal